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Home >> Buick >> 2005 >> Rainier 5.3 M, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 5.3L - Introduction >> Repair Instructions >> Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor Replacement >> Installation Procedure
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Installation Procedure

IMPORTANT: The embossed arrow on the MAF/IAT sensor indicates the proper air flow direction. The arrow must point toward the engine.
    Fig 1: MAF/IAT Sensor Air Flow Direction Arrow
    GM359112Courtesy of GENERAL MOTORS CORP.
  1. Locate the air flow direction arrow (2) on the MAF/IAT sensor.
    2. Fig 2: View Of Intake Air Tube
    GM898123Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. Install the MAF/IAT sensor on to the air cleaner housing.
  3. Tighten the clamp securing the MAF/IAT sensor to the air cleaner housing.

    Tighten:  Tighten the clamp to 7 N.m (62 lb in).

  4. Install the air cleaner outlet duct.
  5. Install the air cleaner outlet duct bolt.

    Tighten:  Tighten the bolt to 10 N.m (89 lb in).

  6. Tighten the clamps at the MAF/IAT sensor and the throttle body.

    Tighten:  Tighten the clamps to 7 N.m (62 lb in).

    7. Fig 3: View Of MAF/IAT Sensor Electrical Connector
    GM898340Courtesy of GENERAL MOTORS CORP.
  7. Connect the MAF/IAT electrical connector.
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